1. finding the nth term of the sequence -2, 4, -8, 16, -32, …

Plzzz maths ! quadratic sequences=an^2+c 1) 11,17,27,41,59 2) 7,16,31,52,79 3) 6,18,38,66,102 4) 0,9,24,45,72 5) 0,12,32,60,96

Find the value of x for which the lines are parallel.

What expression is equivalent to 42x-56y